package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.*;
import com.itheima.reggie.service.OrderDetailService;
import com.itheima.reggie.service.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 * @author ChuMingYu
 */
@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private OrderDetailService orderDetailService;

    @Override
    public void submit(Orders orders) {
        // 0、获取用户id
        Long userId = BaseContext.getCurrentId();
        // 1、查询购物车数据：select * from shopping_cart where user_id = ?
        LambdaQueryWrapper<ShoppingCart> qw = new LambdaQueryWrapper<>();
        qw.eq(ShoppingCart::getUserId, userId);
        List<ShoppingCart> shoppingCarts = shoppingCartMapper.selectList(qw);

        // 2、查询用户数据 select * from user where id = ?
        User user = userMapper.selectById(userId);

        // 3、根据地址id查询地址数据 select * from address_book where id = ?
        AddressBook addressBook = addressBookMapper.selectById(orders.getAddressBookId());
        //自动生成订单号
        Long orderId = IdWorker.getId();
        //总价
        AtomicInteger amount = new AtomicInteger(0);
        // 4、保存订单明细数据：点了哪些菜品或套餐
        //for (ShoppingCart shoppingCart : shoppingCarts) {
        //    // ShoppingCart shoppingCart --> OrderDetail orderDetail
        //    OrderDetail orderDetail = new OrderDetail();
        //    BeanUtils.copyProperties(shoppingCart, orderDetail);
        //    // orderId单独设置
        //    orderDetail.setOrderId(orderId);
        //    // amount 金额单独设置 数量  *  单价
        //    amount.addAndGet();
        //    orderDetailMapper.insert(orderDetail);
        //}

        //组装订单明细信息
        List<OrderDetail> orderDetails = shoppingCarts.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());

        // 5、保存订单数据，有许多数据需要单独设置
        orders.setId(orderId);//订单id
        orders.setOrderTime(LocalDateTime.now());//订单创建时间
        orders.setCheckoutTime(LocalDateTime.now());//订单结账时间
        orders.setStatus(2);//1待付款，2待派送，3已派送，4已完成，5已取消
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);//用户id
        orders.setNumber(String.valueOf(orderId));//订单号
        //orders.setUserName(user.getName());//用户名
        orders.setConsignee(addressBook.getConsignee());//收货人
        orders.setPhone(addressBook.getPhone());//收货人联系电话
        orders.setAddress(
                (addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));//省+市+区域+详细地址
        //保存订单
        this.save(orders);
        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);
        // 6、删除当前用户的购物车数据
        // delete from shopping_cart where user_id = ?
        LambdaQueryWrapper<ShoppingCart> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(ShoppingCart::getUserId,userId);
        shoppingCartMapper.delete(wrapper);
    }
}
